Briefly introduce: What are the characteristics of high-temperature adhesive tape in the field of new energy photovoltaic?

Characteristics of high temperature adhesive tape in new energy photovoltaic field

High-temperature adhesive tape in the field of new energy photovoltaic is a special adhesive product in the production, installation and operation and maintenance of photovoltaic modules. It is suitable for the whole process of high-temperature working conditions from module packaging to long-term outdoor use in photovoltaic industry, and has core characteristics such as high temperature resistance, weather resistance and stable adhesive force. It can resist the influence of high-temperature environment in the scenes of photovoltaic module lamination, welding and outdoor service, and ensure the stable structure and electrical performance of modules. It is a key auxiliary material for photovoltaic manufacturing, and its performance is directly related to the production yield and service life of photovoltaic modules.

The core feature of this kind of adhesive tape is excellent high temperature resistance, which is suitable for the high temperature process of photovoltaic module production and outdoor extreme temperature environment. The laminating process of photovoltaic module needs to be completed at high temperature and high pressure of 130℃-180℃, and the high-temperature adhesive tape can keep its shape stable under such short-term high-temperature working conditions, without melting, degumming and residual adhesive, so as to meet the temporary bonding requirements of battery fixing, bus bar positioning and the like; When used outdoors, the photovoltaic module is exposed to sunlight for a long time, and the surface temperature of the backboard can reach above 80℃, and the extreme temperature in some areas even exceeds 100℃. The adhesive force of the high-temperature adhesive tape can be maintained in a wide temperature range from-40℃ to 150℃, and it will not crack or become warped due to sudden temperature rise and fall, which is suitable for the needs of photovoltaic projects in different climate zones.

Outstanding weather resistance and environmental aging resistance are the key characteristics of photovoltaic outdoor applications. The outdoor service period of photovoltaic modules is usually more than 25 years. High-temperature adhesive tapes need to resist the natural environment erosion such as ultraviolet rays, rain, high humidity and salt fog for a long time. Most of these tapes use substrates and adhesives with excellent weather resistance. After long-term outdoor use, the substrate will not be brittle and brittle, and the adhesive layer will be pulverized and peeled off. At the same time, the adhesive strength can be kept stable, so as to avoid the internal structural displacement and poor electrical connection of photovoltaic modules caused by tape failure, and ensure the long-term stable operation of the modules.

Good electrical insulation performance, which meets the electrical safety requirements of photovoltaic modules. High-voltage current exists in the working process of photovoltaic modules. High-temperature adhesive tapes are widely used in the internal circuit insulation, bus-bar isolation, frame sealing and other links of modules. Both the base material and the adhesive layer are insulating materials, with high breakdown voltage, which can effectively block current conduction and prevent electrical faults such as leakage and short circuit. At the same time, the insulation performance of the adhesive tape will not decrease in high temperature and high humidity environment, and reliable insulation protection will always be maintained to ensure the electrical safety of photovoltaic modules.

The adhesive force is stable and suitable for a variety of photovoltaic substrates to meet the adhesive requirements of production and application. Photovoltaic modules involve glass, EVA, backboard, aluminum alloy, copper foil and other substrates with different materials. The adhesive of high-temperature tape has good compatibility with various substrates, moderate initial adhesion and strong adhesion, which can not only be quickly bonded and positioned in the production process, but also maintain a stable bonding effect in long-term use, and will not be degummed due to thermal expansion and cold contraction of the substrate; At the same time, some high-temperature adhesive tapes are removable, which can be easily peeled off in the rework process of component production without leaving adhesive traces on the surface of the substrate, so as to avoid affecting the secondary adhesion of the substrate and improve the efficiency of production rework.

Excellent physical properties, suitable for the technological operation of photovoltaic production. In the production process of photovoltaic modules, the high-temperature adhesive tape needs to go through lamination, high pressure, cutting, handling and other processes, and its base material has good tensile strength and tear resistance, and will not be damaged due to external pull and extrusion; At the same time, the thickness of the adhesive tape is uniform, and the winding is smooth. In the operations of automatic labeling and manual bonding, it is not easy to wrinkle and become warped, which can accurately fit the bonding surface, improve the convenience and accuracy of production operation, and adapt to the large-scale and automatic production requirements of photovoltaic industry.

In addition, the high-temperature adhesive tape in the photovoltaic field also needs to meet the requirements of environmental protection and industry standards. The adhesive does not volatilize harmful substances, and does not release pollutants such as formaldehyde and benzene during the production and use of components. At the same time, it meets the environmental certification of RoHS and REACH in the photovoltaic industry and the relevant testing standards of photovoltaic components, ensuring the environmental protection and reliability of products, which is in line with the concept of green development of new energy industry.

To sum up, the high-temperature adhesive tape in the field of new energy photovoltaic is a special adhesive product with high temperature resistance, weather resistance, insulation, stable adhesion and other properties. All its characteristics are designed around the production process and outdoor application requirements of photovoltaic industry, and it is an important material to ensure the production quality of photovoltaic modules, improve the service life of modules and maintain electrical safety. With the large-scale development of photovoltaic industry, the performance of high-temperature adhesive tape is constantly upgrading to meet the production and application requirements of photovoltaic modules with higher efficiency and weather resistance.